Innovative Cable Management for a Cleaner Build

One of the standout features of the RB Series is its integrated cable management system. The PSU includes a built-in groove and Velcro straps that help secure excess cables neatly along its sides. This smart design minimizes cable clutter, improving airflow and giving your build a more professional finish.

Unlike fully modular units, the RB Series uses a semi-modular design — meaning only essential cables are fixed, while SATA and peripheral cables can be added when required. This flexibility lets users achieve a tidy and optimized build without dealing with unnecessary wiring.

Powering Next-Generation Hardware

The RB Series is fully compliant with the standard, ensuring broad compatibility with both current and future components. The 650W and 750W models feature a PCIe Gen 5.1 12V-2x6 connector (12+4-pin) capable of delivering up to 450W — making it an excellent choice for powering the latest high-performance graphics cards.

Additionally, the 750W variant includes a 12V-2x6 to PCIe 6+2-pin cable, ensuring smooth operation even for GPUs that require multiple connectors. Whether you’re running high-end AMD or NVIDIA graphics cards, the RB Series provides reliable, stable power delivery thanks to its single +12V rail and DC-to-DC conversion design, which enhances voltage stability and power quality.

Silent Performance Meets Efficiency

Keeping your system cool and quiet is essential — and the RB Series delivers just that. Each unit is equipped with a 135 mm Fluid Dynamic Bearing (FDB) fan that runs quietly, producing only 33.2 dBA to 40.1 dBA depending on the load. This ensures an optimal balance between cooling performance and low noise levels.

With 80 Plus Bronze efficiency, the PSU wastes less power as heat, improving system performance and reducing overall energy costs. The RB Series can also handle continuous full-load operation at ambient temperatures up to 40°C, making it a dependable choice for both gaming rigs and professional workstations.

Safety and Reliability First

Beyond performance, safety has been a major focus in the RB Series design. Each PSU comes equipped with essential protection features including:

• OPP — Over Power Protection
• OVP — Over Voltage Protection
• SCP — Short Circuit Protection
• OCP — Over Current Protection
• UVP — Under Voltage Protection
• OTP — Over Temperature Protection

These built-in protections safeguard your PC components from electrical surges, overheating, and unstable voltage — ensuring long-lasting performance and peace of mind for users.

Pricing and Availability

The RB Series PSUs are available in a sleek black finish and officially launched on October 17, 2025. Pricing is as follows:

• RB 550W — $49.99
• RB 650W — $59.99
• RB 750W — $69.99

Whether you’re a casual gamer, content creator, or PC enthusiast, the Lian Li RB Series PSU offers a perfect balance of efficiency, performance, and aesthetics. Its ATX 3.1 compliance, PCIe Gen 5.1 support, and intelligent cable management make it a forward-looking investment for future-ready PC builds.

Why the Lian Li RB Series Stands Out

In a crowded PSU market, the RB Series brings several unique advantages:

• ✔ Future-proof design with PCIe Gen 5.1 support
• ✔ Cleaner builds with integrated cable management
• ✔ Reliable power delivery with single +12V rail
• ✔ Whisper-quiet cooling for a better user experience
• ✔ Affordable pricing for high-end performance